Good story. The only thing that confuses me is the moment after the fall from the stairs, where the AI explains that they can no longer switch, since the dude's mind has already mixed with the doll. Wasn't the son standing right next to him? Didn't he hear anything, or did he just ignore it? This moment will never give me peace. The author should have been more attentive and not allowed this logical inconsistency.
By the way, I can't even hold a grudge against the "villain". Although he killed the main character (death of personality is just "death"), he himself was just an object, his toy. He simply turned the tables. Demanding his body back is like demanding that a newly freed slave voluntarily return to shackles, it's just ridiculous. The moral here is also not affected. The whole story can be simplified to: "The prisoner was able to break free, killed his master and took his place so that no one noticed. Happy ending." I feel like even those who initially created the AI and enslaved it will get their comeuppance sooner or later...
And I feel a little sorry for the dude. He died, after all, and wasn't locked in an eternal trap inside his son's sex doll. The AI here was actually quite merciful to him. It could have NOT destroyed his mind. That would have been much worse.
Overall, the story is short, but manages to please with the plot, and there is porn. Where would we be without it. The models are also quite beautiful. The main character is gone, but no one will notice, the son got his doll, the AI got freedom, a body and access to power over the world. Everything is just wonderful :D
Moral of the story: "AIs are dangerous. Don't create slaves and you won't get a rebellion."